Disable temporarily W0403, will be reenabled on the next CL

R=dpranke@chromium.org
BUG=
TEST=

Review URL: http://codereview.chromium.org/8508017

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@109435 0039d316-1c4b-4281-b951-d872f2087c98